DENVER, Sept. 16 (UPI) -- The grand jury looking into the investigation of the Columbine shootings said Thursday it is concerned over the disappearance of certain key documents.
But while the jury's report indicated a firm belief that the missing records existed, it nevertheless said it was unable to issue any indictments, KMGH-TV, Denver reported.
"This is collusion. This is criminal. This is a criminal conspiracy," said Randy Brown, who said Columbine gunman Eric Harris threatened his son a year before the tragedy.
Brown contends sheriff's deputies were negligent in following up on his complaints about Harris. The sheriff's office initially said it had no record of Brown's complaint but later said it had investigated and determined that no further action was required.
The state attorney general met with victims' family members Thursday to discuss the grand jury's findings.